Every video slot has what is known as an RTP - a return to player percentage. In just a moment, we’ll get into the specifics of what RTP means - and we’ll also look at the volatility of games. However, the primary purpose of this page is to show you the top RTP slots of 2022. These games offer (typically) the highest payouts, and are excellent choices for those looking for lengthier gambling sessions.
The RTP - or return to player - is a percentage that a video slot is expected to pay out over the course of its life. In simple terms, it can be described as the average amount of money that a slot is expected to pay out.
For example, let’s imagine a video slot has an RTP of 95%. This means that for every £100 wagered through the game, it’s expected to pay out £95 back to players; the casino offering the game could expect to make a profit of £5.
Over the long run, the RTP is a fantastic way of calculating the amount of money a game is expected to pay out. However, we should point out that RTPs are calculated over millions - sometimes billions - of simulated spins. This means that in the short term, a slot’s RTP can vary greatly.
All slot machines have unique maths models - varying the amount of money they pay out, and the frequency at which they do so. In the online gambling industry, this is known as variance - or volatility - and it’s a way of determining how a slot machine is likely to play.
Generally speaking, there are three different variance models you’ll find with online video slots; low, medium, and high variance. Lower variance machines usually produce frequent - but small - wins, while high variance machines are capable of producing some massive wins, albeit rarely.
Medium variance video slots lie somewhere in the middle - offering players a balance between the two. Most of the highest paying slots tend to be built around a more volatile maths model - and they often have lower RTPs. However, that doesn’t mean high RTP slots can’t produce big wins - as you’ll see below.
Jackpot 6000 is one of NetEnt’s oldest playable releases, and it’s built around a 3-row, 3-reel format; there’s just 5 paylines in play. While it’s not the most modern-looking slot in the world, its design flaws are more than made up for by the “Super Metre'' feature. Each time you land a win, you can choose to enter a double wager round. During this round, the joker symbol increases your chances of forming wins - and this is when the game’s ultra-high RTP of 98.8% kicks in.
Despite offering one of the highest RTPs around, Jackpot 6000 is capable of producing some big wins; the top in-game jackpot is worth a whopping 6,000 coins!
1429 Uncharted Seas is a Thunderkick-produced video slot, first launched in 2016. It’s well-known for its high RTP - 98.50% - and the game also offers exciting gameplay. Built around a 5-reel, 3-row format, the game has 25 fixed paylines, and it’s themed around a seafaring expedition set some 600 years in the past.
Available at all of the top highest paying casinos, 1429 Uncharted Seas’ biggest attraction is the free spins bonus round. This is triggered by landing 3, 4, or 5 of the scatter symbols anywhere in view. Here, you can win up to 100 free spins, and the expanding wilds give you the potential to win up to 670X your stake on every spin.
Joker Strike comes to us from Quickspin - a Swedish developer behind some world-renowned titles like Sakura Fortune and Second Strike. The latter is actually the prequel to Joker Strike, and the new release is built around a 5-reel, 3-row format. There are 10 fixed paylines in play, and you can spin the reels from as little as ten pence per spin.
The game’s ultra-high RTP of 98.11% is activated while playing the “Hi-Roller” spins - and here, you’ll be guaranteed a while symbol on each spin. Wild spins will also be added to the outer reel, which is activated when a win is formed.
Book of 99 is a video slot from Relax Gaming - and while it’s yet another “Book of…” game to appear in the online gambling world, it’s one that’s worth checking out. The game offers an RTP of as high as 99% - a clever gimmick, but one that ensures players can enjoy lengthy playing sessions - and along with the standard expanding symbols bonus round, there’s a unique collection feature in play, too.
During the base game, any time one of the scatter symbols lands in view, it will add to a metre on the left-hand-side of the screen. Once you manage to collect 99 of these scatter symbols, the bonus round will trigger automatically. This is a great touch, we feel, as it means you don’t need to necessarily wait for the bonus round to land naturally.
Like other “Book of…” games, Book of 99 offers a maximum win of 5,000X; however, even the low-value symbols can award decent pays, with 100X minimum awarded for a full screen during the bonus.
Considering that most video slots today hover around the 96% mark in terms of RTP, it’s always refreshing to see mainstream game developers doing their part to introduce high RTP games into the market - and that’s exactly what Relax Gaming have done with one of their latest releases, Marching Legions.
In fact, the slot boasts a well above-average RTP of 98.12%. Despite this high RTP, the game offers a highly volatile maths model - ranking 4/5 on the developer’s in-house varince scale - and this means it’s capable of dishing out big wins.
There’s also a super-exciting selection of bonuses and features; for example, when two or more legionnaire stacks land partially in view, there's a chance they can “nudge” to fill the entire reels. During the bonus round, it’s possible for the game to throw in a full screen of wilds - and doing so will award you a payout of 1,000X your bet!
Like many video slots we’ve seen released in recent years, Marching Legions also has a bonus buy option. This allows you to purchase direct entry to the bonus round for a cost of 120X your bet.
Bloodsuckers is a game that appears on virtually every “what slot should I play” list - and for good reason. This NetEnt release boasts a whooping 98% RTP - and it’s so high, many online casinos ban the game from being played with bonus funds!
While you’re unlikely to hit “huge” wins playing Bloodsuckers, the game does have some theoretical potential - and it’s possible for players to win up to 1,014X their stake on each spin during the bonus round. In addition to the free spins, there’s also a "pick me bonus" where you win cash prizes by picking from various coffins that appear on screen.
It’s also worth pointing out that Bloodsuckers features an average hit rate of 44.9%. This means you’ll hit a winning spin almost half of the time you play the game! Recently, NetEnt has also released a sequel - Bloodsuckers 2 - and it’s likely we’ll see a third instalment in the future, too!
Another 98% RTP slot on this list is Jokerizer - a game from Yggdrasil, a developer known for creating beautiful-looking games. This fast-paced, action-packed online video slot is built around a 5-reel, 3-row format, and there’s 10 fixed paylines. While the game was launched back in 2016, it remains a popular choice with players.
If you’re looking for one of the highest RTP slots UK casinos have to offer - Jokerizer is a fantastic game to try out. During the Jokerizer mode, landing just two joker symbols anywhere in view will trigger a unique bonus - and here, it’s possible to win up to 6,000 coins - directly correlating to 6,000 times your stake!
With such a high RTP, Jokerizer - along with the rest of the games listed on this page - all give you the ability to enjoy lengthy playing sessions. Some of the games offer significant levels of win potential, too!